In the weekly rail traffic summary released Feb. 28, 2013, the Association of American Railroads reported that rail traffic remained mixed for the week ending Feb. 23, 2013. U.S. carload volume was down 1.2 percent, while intermodal volume was up 11 percent compared to the same week in 2012. Total U.S. rail traffic was up 4.1 percent compared to the same week last year. Read More